Trolley-wheel.



No. 638,470. Patented Dec. 5, $99.. J. L. nsauon.

TBOLLEY WHEEL; (Application filed Aug-5 8, 189 8.)

(No Model.)

Witnesses.

m re

JOHN L. OSGOOD, OF BUFFALO, NEW YORK.

TROLLEY-WH EEL.

SPECIFICATION forming part of Letters Patent No. 638,470, dated December 5, 1899.

Application filed August 8, 1898.

To 00 whmn 112? may concern.-

Be it known that 1, JOHN L. OSGOOD, a citizen of the United States, residing at Bufialo, in the county of Erie and State of New York, have invented certain new and useful Improvements in Trolley-Wheels, of which the following is a specification.

Myinvention relates to an improved trolleywheel; and the object is to construct the wheel in several separable portions, any one of which can be removed and changed when worn, thus insuring longer life to the wheel.

It also relates to certain details of construction, all of which will be fully and clearly hereinafter described and claimed, reference being had to the accompanying drawings, in which- Figure 1 represents an end elevation of my improved wheel. Fig. 2 is a section on or about line (b a, Fig. 1, illustrating my preferred construction. Fig. 3 is a side elevation of my preferred construction. Fig. represents a section on or about line b b, Fig. 5. Fig. 5 is a detached side elevation of the tubular bushing.

'In referring to the drawings in detail, like numerals designate like parts.

The construction embodied in my preferred form of wheel comprises the tubular peripherally-screw-threaded bushing 1, the middle disk 2, having a central screw-threaded circular opening adapted to engage with the screwthread on the bushing, the two side plates 3, and the locking-nuts 4. The disk 2 is provided with a peripheral groove 5 to afford a channel for the trolley-wire, and the side plates 3 are curved or flanged outwardly from each other, as shown at 6 in Figs. 1, 2, and 3. The plates 3 are also preferably provided with bent or offset portions 7, which when the several parts are assembled in their proper position partially embrace the disk 2, projecting 'over the outer edges of the same, thus firmly and rigidly locking it in position. This also obviates any tendency of the forming of a thin fin or side wall by the wearing of the grooved periphery of the disk from the trolleywire and which might cut the wire under certain circumstances.

I preferably bend the outer edges 8 of the side plates 3 upon themselves to reinforce and strengthen them. This enables me to Serial No. 688,073. (No model.)

construct the plates of thinner and lighter metal, and also stiffens and prevents their bending out of shape should the wheel leave the wire and strike the guide-wires or other obstructions.

For the purpose of lubricating I employ a series of ducts or openings, which extend through the device. The preferable form of these oil-conducting ducts is illustrated in the drawings, in which a circular groove 13 extends entirely around the periphery of the bushing 1 and coincides with a corresponding groove upon the interior of the disk 2, forming an oil reservoir or receptacle 9. A duct 10 extends from this reservoir 9 through the disk to provide means for the introduction of the oil, and lubricating-ducts l1, preferably 4 in number, extend inwardly from the reservoir,substantially as shown in Fig. 4.

The bushing 1 and the disk 2 are formed of any well-known good electric conducting material-such as bronze, brass, copper, or carbon, &c.or the disk maybe formed of a series of alternate layers of copper and carbon, and the side plates and nuts are generally formed of iron or steel and coated with copper, although they may be made of the same metal as the bushing and disk.

To assemble the device, the disk 2 is screwed upon the bushing l to substantially a central position to bring the groove in the disk above the groove in the bushing, and thus form an annular space for the reception of the oil. The side plates are then placed upon the bushing, one on each side of the disk, and finally the nuts are screwed upon the ends of the bush ing and tightly against the side plates, thus forcing and locking the whole rigidly together. To dismount the device, proceed reversely.

I am aware that changes in the form and proportion of parts and in the details of construction of the device herein shown and described as the preferred embodiment of my invention maybe made by a skilled mechanic without departing from the principle orsacrificing the advantages of my invention, and I therefore reserve the right to make such alterations and modifications as fairly fall with in the scope of my invention.

I claim as my invention- 1. A trolley-wheel comprising a peripherally-screw-threaded bushing, a center disk screwed upon the middle portion thereof, two side plates stamped into shape and each bent or offset to project slightly over the periphery of the disk, and then curving or flaring outwardly and nuts screwing upon the bushing to lock the whole together, as set forth.

2. A trolley-wheel comprising a peripherally-screw-threaded bushing, a central disk screwed upon the middle of said bushing, two side plates and screw-nuts screwing upon the ends of the bushing for locking the whole tcgether.

3. A trolley-wheel comprising a peripherally-screwthreaded tubular bushing, provided with an encircling peripheral groove at or near the middle and lubricating-ducts ex- JOHN L. OSGOOD.

lVitnesses: l

A. J. SANGsTER, G. A. NEULANER. 

